Bump gradio to 5.49.1 (fixes /info API 'argument of type bool is not iterable')

Add speechbrain + ten-vad (required by diarization.py static import-check)

Add peft + torchaudio (transformers static import-check requires them)

Bump gradio to 5.12.0 (fixes HfFolder import on newer huggingface_hub)

Drop gradio pin (Space auto-installs gradio[oauth]==4.44.0)

Tighten deps: drop ctc-forced-aligner (git install) and pyannote-audio (gated, unused)

Deploy demo to HF Space